Cup holder carton adaptor



FIG. 1 is a top-side perspective view of a cup holder carton adaptor showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view;

FIG. 4 is a front elevational view with the rear elevational view substantially identical; and,

FIG. 5 is a right side elevational view with the left side elevational view substantially identical. 

The ornamental design for a cup holder carton adaptor, as shown and described. 